Yikes, no thanks (for countless reasons). K has already stated there is no intent to add LLM things to L&L apps (I believe).
Having said that, you do get some external LLM integration via Apple Intelligence and Grammarly. The latter works well, and the former is hidden behind the Language Tools menu. If you’re looking for ChatGPT as a research tool… I don’t think that should be anywhere near Scrivener.